1 files changed, 37 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/madd-combiner.ll b/test/CodeGen/AArch64/madd-combiner.ll
new file mode 100644
index 000000000000..7c9787a7281a
--- /dev/null
+++ b/test/CodeGen/AArch64/madd-combiner.ll
@@ -0,0 +1,37 @@
+; RUN: llc -mtriple=aarch64-apple-darwin            -verify-machineinstrs < %s | FileCheck %s
+; RUN: llc -mtriple=aarch64-apple-darwin -fast-isel -verify-machineinstrs < %s | FileCheck %s
+
+; Test that we use the correct register class.
+define i32 @mul_add_imm(i32 %a, i32 %b) {
+; CHECK-LABEL: mul_add_imm
+; CHECK:       orr [[REG:w[0-9]+]], wzr, #0x4
+; CHECK-NEXT:  madd  {{w[0-9]+}}, w0, w1, [[REG]]
+  %1 = mul i32 %a, %b
+  %2 = add i32 %1, 4
+  ret i32 %2
+}
+
+define i32 @mul_sub_imm1(i32 %a, i32 %b) {
+; CHECK-LABEL: mul_sub_imm1
+; CHECK:       orr [[REG:w[0-9]+]], wzr, #0x4
+; CHECK-NEXT:  msub  {{w[0-9]+}}, w0, w1, [[REG]]
+  %1 = mul i32 %a, %b
+  %2 = sub i32 4, %1
+  ret i32 %2
+}
+
+; bugpoint reduced test case. This only tests that we pass the MI verifier.
+define void @mul_add_imm2() {
+entry:
+  br label %for.body
+for.body:
+  br i1 undef, label %for.body, label %for.body8
+for.body8:
+  %0 = mul i64 undef, -3
+  %mul1971 = add i64 %0, -3
+  %cmp7 = icmp slt i64 %mul1971, 1390451930000
+  br i1 %cmp7, label %for.body8, label %for.end20
+for.end20:
+  ret void
+}
+